VARIABLE FLUX APPATAUS FOR MOTOR ROTOR

摘要

PURPOSE: An adjusting device for a motor rotor is provided to adjust the magnetic flux of a motor, change useful magnetic flux according to the number of rotations of the motor, and change the useful magnetic flux without an extra device to move a rotor core in case of moving the rotor core by separation. CONSTITUTION: An adjusting device for a motor rotor comprises: a rotary shaft(20); a first rotor core(12), a second rotor core(14), and a torsion spring(30). The first rotor core is combined to the rotary shaft by being inserted, and a first permanent magnet is inserted into the first rotor core. The second rotor core is inserted to the rotary shaft to be rotated, is provided closely to the first rotor core, and a second permanent magnet is inserted into the second rotor core. The torsion spring is connected to the second rotor core(14), the rotary shaft, and the second rotor core. The torsion spring provides elasticity to the second rotor core to the first rotor core.